Mock Panoptes resources in email settings tests (#4252)
Mock Panoptes resources in email settings tests (#4252)

Stub out resource methods so that the tests don't make API requests.
Clean up the spec file a bit.
amyrebecca/Panoptes-Front-End,amyrebecca/Panoptes-Front-End,zooniverse/Panoptes-Front-End,amyrebecca/Panoptes-Front-End